If a pebbly porous belt is followed by a moist marshy belt which sequence does it show?

Correct answer: Bhabar to Terai

The direct answer is A, Bhabar to Terai. In the Himalayan foothill region, the Bhabar belt is made of coarse pebbles, gravel, and porous material. River water often sinks into this highly permeable belt. Further south, the water reappears and creates the wetter, marshy Terai belt. Option A is correct because it gives this exact geographical sequence: porous pebbly Bhabar followed by moist marshy Terai. Option B, Khadar to Bhangar, describes two types of alluvial plains, not the pebbly-to-marshy foothill sequence; also, their order and features do not match here. Option C, Konkan to Malabar, names coastal regions and does not describe Himalayan belts. Option D, Thar to Ladakh, joins two different dry or high-altitude regions and has no such sequence. The fact chain is: Himalayan foothills → coarse porous Bhabar → underground flow → wet marshy Terai. Memory cue: Bhabar hides the water; Terai brings the water back and becomes marshy.